https://bugs.kde.org/show_bug.cgi?id=416972
Bug ID: 416972
Summary: Plasmashell, several KDE applications consume 100%
CPU, spam notifications and become unresponsive with
many overlayfs mounts
Product: plasmashell
Version: 5.17.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: DataEngines
Assignee: plasma-b...@kde.org
Reporter: chris.vanderpen...@gmail.com
Target Milestone: 1.0
SUMMARY
With many overlayfs mounts present, eg when created by microk8s, several KDE
applications and Plasmashell consume 100% CPU, spam notifications and become
unresponsive.
Possibly related to bug 413110
STEPS TO REPRODUCE
1. Install microk8s: sudo snap install --classic microk8s
2. Run many containers: sudo microk8s.kubectl run nginx --image=nginx
--replicas=50 --expose=true --port='80'
3. Tear down: sudo microk8s.kubectl delete service/nginx deployment/nginx ;
sudo snap remove --purge microk8s
This is likely reproducible by running a bunch of containers in regular Docker,
too.
OBSERVED RESULT
* Kate, Gwenview, Dolphin consume 100% CPU and become partially unresponsive
with significant delay responding to inputs
* Dolphin begins consuming multiple gigabytes of RAM - Heaptrack suggests most
of this goes via Solid::StorageAccess::accessibilityChanged
* Plasmashell consumes 100% CPU and spams "Filesystem is not responding"
notifications
* If the notification backlog is not cleared fast enough, Plasmashell crashes
EXPECTED RESULT
None of the above should occur
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 19.10 + kubuntu backports PPA
(available in About System)
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.66.0
Qt Version: 5.12.4
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